A045141 - OEIS

%I #10 Apr 22 2023 20:31:28

%S 191,239,251,254,447,495,507,510,575,639,719,735,755,759,764,765,815,

%T 827,830,879,891,894,911,927,947,951,956,957,971,974,987,990,995,999,

%U 1004,1005,1010,1014,1016,1017,1215,1263,1275

%N Numbers whose base-4 representation contains exactly one 2 and three 3's.

%t Select[Range[1300],DigitCount[#,4,2]==1&&DigitCount[#,4,3]==3&] (* _Harvey P. Dale_, May 07 2019 *)

%Y Cf. A007090.

%K nonn,base

%O 1,1

%A _Clark Kimberling_